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Balance Velocities of the Greenland Ice SheetWe present a map of balance velocities for the Greenland ice sheet. The resolution of the underlying DEM, which was derived primarily from radar altimetry data, yields far greater detail than earlier balance velocity estimates for Greenland. The velocity contours reveal in striking detail the location of an ice stream in northeastern Greenland, which was only recently discovered using satellite imagery. Enhanced flow associated with all of the major outlets is clearly visible, although small errors in the source data result in less accurate estimates of the absolute flow speeds. Nevertheless, the balance map is useful for ice-sheet modelling, mass balance studies, and field planning.
Document ID
Document Type
Reprint (Version printed in journal)
Joughin, Ian
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Fahnestock, Mark
(Maryland Univ. College Park, MD United States)
Ekholm, Simon
(National Survey of Denmark Copenhagen, Denmark)
Kwok, Ron
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1997
Publication Information
Publication: Laboratory for Hydrospheric Processes Research Publications
Subject Category
Earth Resources And Remote Sensing
Distribution Limits

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